PL29309B3 - A method to reduce the slippage of granular calcium cyanamide. - Google Patents
A method to reduce the slippage of granular calcium cyanamide. Download PDFInfo
- Publication number
- PL29309B3 PL29309B3 PL29309A PL2930938A PL29309B3 PL 29309 B3 PL29309 B3 PL 29309B3 PL 29309 A PL29309 A PL 29309A PL 2930938 A PL2930938 A PL 2930938A PL 29309 B3 PL29309 B3 PL 29309B3
- Authority
- PL
- Poland
- Prior art keywords
- granular
- calcium cyanamide
- slippage
- calcium
- reduce
- Prior art date
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- MVXMNHYVCLMLDD-UHFFFAOYSA-N 4-methoxynaphthalene-1-carbaldehyde Chemical compound C1=CC=C2C(OC)=CC=C(C=O)C2=C1 MVXMNHYVCLMLDD-UHFFFAOYSA-N 0.000 title claims description 13
- 238000000034 method Methods 0.000 title claims description 5
- 239000000203 mixture Substances 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000011575 calcium Substances 0.000 claims 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 7
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 6
- 238000009331 sowing Methods 0.000 description 6
- 235000010216 calcium carbonate Nutrition 0.000 description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- 239000000292 calcium oxide Substances 0.000 description 3
- 235000012255 calcium oxide Nutrition 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000005997 Calcium carbide Substances 0.000 description 2
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 2
- 239000001095 magnesium carbonate Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 235000011160 magnesium carbonates Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000037039 plant physiology Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Description
Najdluzszy czas trwania patentu do 15 stycznia 1949 r.W ostatnich czasach zdolano wytwo¬ rzyc cyjanoamidek wapnia w postaci ziar¬ nistej, np. wedlug sposobu opisanego w patencie nr 19556. Ten cyjanoamidek wa¬ pnia powstaje w piecu obrotowym z ziar¬ nistego weglika wapnia w temperaturze lezacej w poblizu granicy spiekania sie ziarn weglika wapnia. Wytworzony ziar¬ nisty cyjanoamidek wapnia ma powierz¬ chnie gladka oraz twarda i postac okra¬ gla; powierzchnia taka przy wysiewaniu recznym okazala sie szczególnie korzystna.Przy wysiewaniu nawozu sztucznego za pomoca maszyn, stosowanym obecnie w srednich i wiekszych gospodarstwach rol¬ nych, np. przy wysiewaniu za pomoca roz- siewarki, taka gladka i twarda powierz¬ chnia ziarn wykazuje te niedogodnosc, ze wskutek zbyt latwego ich slizgania sie z normalnej wysiewarki wysiewa sie na pe¬ wna powierzchnie gleby wiecej cyjano¬ amidku wapnia, niz to jest pozadane, i przy zatrzymaniu maszyny nastepuje wskutek niezupelnego zamkniecia skrzyni wysiewajacej jeszcze dalsze wypadanie latwo slizgajacych sie ziarn cyjanoamid¬ ku wapnia.Stwierdzono, ze ta wlasciwosc slizga¬ nia sie moze byc zmniejszona przez doda¬ nie do cyjanoamidku wapnia ziarnistegowapna palonego. Mozna jednak stosowac i inne srodki w postaci ziarnistej, pole¬ pszajace dzialanie nawozu. Zamiast ziar¬ nistego wapna palonego mozna stosowac np. tez ziarnisty weglan wapnia, nastepnie ziarnista magnezje palona lub ziarnisty weglan magnezu. Okazalo sie, ze ziarnisty dolomit równiez nadaje sie do stosowania przy tym sposobie. Oprócz polepszenia fi¬ zycznego domieszka tych materialów ziar¬ nistych powoduje polepszenie wlasciwosci ziarnistego cyjanoamidku wapnia pod wzgledem nawozowym i z punktu widze¬ nia fizjologii roslin. To polepszenie polega na znacznym powiekszeniu wlasciwosci za¬ sadowej cyjanoamidku wapnia, a przy za¬ stosowaniu substancji zawierajacych ma¬ gnez równiez na wprowadzeniu do gleby cennego skladnika.Po krótkim mieszaniu mozna rozpo¬ znac jeszcze wyraznie ziarna cyjanoamid¬ ku wapnia i ziarna domieszki po ich róz¬ nym kolarze. Aby osiagnac równomierny wyglad mieszaniny, miesza sie ja przez czas dluzszy. W wyniku wzajemnego za¬ barwiania sie ziarn nierównomierny wy¬ glad mieszaniny znika.Przyklad. Poniewaz ziarnisty cyjano¬ amidek wapnia otrzymuje sie przecietnie o zawartosci 24% N, domieszke weglanów wapnia lub magnezu stosuje sie w takich ilosciach, aby zawartosc azotu po zmiesza¬ niu wynosila przecietnie 20,5 — 21,5%. 88 czesci wagowych ziarnistego cyja¬ noamidku wapnia, otrzymywanego sposo¬ bem wedlug patentu nr 19556, np. o wiel¬ kosci ziarn od 0,3 do 1,5 mm, i 12 czesci wagowych weglanu wapnia w przyblize¬ niu o takiej samej wielkosci ziarn, jak ziarnisty cyjanoamidek wapnia, miesza sie na mase jednolita. W celu wyrównania za¬ barwienia material miesza sie przez czas pewien w bebnie majacym okreslona licz¬ be obrotów. Jest rzecza konieczna, aby do¬ dany weglan wapnia posiadal ziarna o da¬ nej wielkosci, w przeciwnym bowiem ra¬ zie przy przechowywaniu i przewozeniu nastepuje rozdzial skladników, co mo¬ ze spowodowac nierównomierne nawoze¬ nie. PLThe longest term of the patent until January 15, 1949 In recent times, calcium cyanamide has been produced in granular form, for example according to the method described in patent No. 19556. This lime cyanamide is formed in a rotary kiln from granular calcium carbide at a temperature of lying near the sintering boundary of calcium carbide grains. The obtained granular calcium cyanamide has a smooth and hard surface and a round shape; such an area when sowing by hand has proved to be particularly advantageous. When sowing artificial fertilizer with machines, which are currently used in medium and larger farms, for example when sowing with a sowing machine, such a smooth and hard seed surface has this disadvantage. that due to their slippage too easily from a normal sowing machine, more calcium cyanamide is sown over the full surface of the soil than is desirable, and when the machine is stopped, due to the sowing box not fully closed, the easily slipping cyanamide grains still fall out It has been found that this sliding property can be reduced by adding granular quicklime to the calcium cyanamide. However, it is also possible to use other granular agents which improve the effect of the fertilizer. Instead of grainy quicklime, for example, it is also possible to use granular calcium carbonate, then granular quicklime or granular magnesium carbonate. It has turned out that granular dolomite is also suitable for this method. In addition to the physical improvement, the admixture of these granular materials results in an improvement in the fertilizing properties of the granular calcium cyanamide from the point of view of plant physiology. This improvement consists in a significant increase in the basic properties of calcium cyanamide, and with the use of magnesium-containing substances also in the incorporation of a valuable ingredient into the soil. After a short stirring, you can still clearly identify the calcium cyanamide grains and the admixture grains. various cyclists. In order to achieve a uniform appearance of the mixture, it is stirred for a longer time. As a result of the mutual staining of the grains, the uneven, smooth mixture disappears. Since granular calcium cyanamide is obtained on average with a N content of 24%, an admixture of calcium or magnesium carbonates is used in such amounts that the nitrogen content after mixing is on average 20.5 - 21.5%. 88 parts by weight of a granular calcium cyanamide obtained by the method of Patent No. 19556, e.g. with a grain size of 0.3 to 1.5 mm, and 12 parts by weight of calcium carbonate approximately the same grain size , like granular calcium cyanamide, is blended into a uniform mass. In order to even out the coloration, the material is mixed for a certain time in a drum having a certain number of revolutions. It is imperative that the added calcium carbonate have grains of a given size, otherwise the constituents will be separated during storage and transport, which may result in uneven fertilization. PL
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL29309B3 true PL29309B3 (en) | 1940-10-31 |
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